# ── Stage 1: Build ──────────────────────────────────
FROM node:20-alpine AS builder

WORKDIR /app

# 先复制依赖描述文件，利用 Docker 缓存层
COPY package.json package-lock.json* ./

# 安装依赖
RUN npm install --registry=https://registry.npmmirror.com

# 复制源码
COPY . .

# 构建生产包（tsc + vite build → dist/）
RUN npm run build

# ── Stage 2: Serve ──────────────────────────────────
FROM nginx:alpine

# 将构建产物复制到 Nginx 默认静态目录
COPY --from=builder /app/dist /usr/share/nginx/html

# Nginx 配置模板（支持 envsubst 环境变量替换）
COPY nginx.conf /etc/nginx/templates/default.conf.template

# 默认后端 API 地址（运行时可通过 -e BACKEND_URL=... 覆盖）
ENV BACKEND_URL=https://ai-workshop.digiwincloud.com.cn/mcp-auth-api

EXPOSE 8902

CMD ["nginx", "-g", "daemon off;"]